Coolant temperature
If the coolant along with the engine becomes too hot, a Check Control message is displayed.
BMW X3 Service & Repair Manual > Electronic switching or control units: Replacing control unit (dme) (N55)
IMPORTANT:
Read and comply with notes on protection against electrostatic discharge (ESD protection).
Necessary preliminary tasks:
Switch off ignition.
Disconnect BATTERY NEGATIVE LEAD .
Remove INTAKE PLENUM .
IMPORTANT:
FOLLOW INSTRUCTIONS FOR REMOVING AND INSTALLING CONTRO ...